Parabola™ VFD Control Panel

The Parabola™ VFD Panels are advanced pre-engineered simplex, duplex, and triplex control panels with a user-friendly HMI control interface. The control panels are designed for pump down, constant pressure or commercial pressure booster applications.


  • Variable frequency drive operation with configurable parameter settings accessible via HMI.
  • Single phase or three phase voltage supply, controls 208/240/480VAC pumps
  • Pressure boosting operation option also available. Constant pressure operation with optional adjustable PID settings and high/low pressure alarms. Selectable alternation pattern: Cycle or timed.
  • Integral PLC/HMI provides pump control logic, virtual HOA selector switches and pump run indicator lights, pump run times and cycle counts.
  • Multiple access levels for added security
  • Simplex adjustable set points: low level, stop, start, high level (adjustable lead pump start and stop set points)
  • Duplex adjustable set points: low level, stop, lead, lag, high level, Triplex models feature two pump alternation and high demand two pump operation (adjustable lead and lag pump start and stop set points)
  • System Integration - Supports Modbus RTU, Modbus TCP, and additional communication protocols. Allows for master and slave operation, remote monitoring and, control of the pump station.
  • Alarm horn sounds at 85 decibels at 10 feet, red beacon flashing alarm light
  • Remote monitoring dry contacts: pump fault and high level
  • Upgraded pump protection: motor protective switch(es) (branch circuit protection, adjustable overload and disconnect)
  • Pump run data logging: records each pump event - start time, stop time and run duration
  • Alarm/fault history: data logging gives access to 250 fault conditions with date and time (optional access to auto save alarm history to usb drive)
  • Panel and controls are UL listed for the United States and Canada


  • Constant Pressure
  • Commercial Pressure Booster Systems
  • Sewage Pump Chambers
  • Grinder Pumps
  • Sump Pump Basins
  • Lift Stations
Get in Touch: 888-733-9283